On ctf_turbine, I played Engineer. I racked up 26 FUCKING KILLS on a single Level 3 Sentry (a fraction of them were with the Wrangler). The sentry was in the corner of the intel room where the ammo box is, right up in the corner next to the stairs to spawn. The server only had about eight people per team, and most of the kills were either clueless Scouts dropping from the vent, or failed attempts by C&D Spies to sap the Sentry. The sentry was eventually destroyed by an Übered Demo.